Smart Garden 3 vs Smart Garden 9 LED


What are the differences between the LEDs of the two gardens?

I have noticed that there is no separate red LED module in the SG3, like in the SG9.

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Smart Garden 3 have white LEDs (including red and blue spectrum), which are important for plant growth, but our eyes can’t see it.
Smart Garden 9 have two types of lights - white and red LEDs. The red light spectrum will make the photosynthesis process more efficient, resulting in better growth and healthier plants.
I have noticed that plants grow a little bit faster in Sg9 and fruiting plants mature faster. But when growing fast herbs like salad, arugula etc. then there is no big difference between these two gardens.